<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>购物车案例</title>
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <div id="app">
        <div v-if="books.length > 0">
            <table class="tab">
                <thead>
                    <tr>
                        <th></th>
                        <th>书籍名称</th>
                        <th>出版日期</th>
                        <th>价格</th>
                        <th>购买数量</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for="book,index in books" :key="book.id">
                        <td>
                            {{index+1}}
                        </td>
                        <td>
                            {{book.name}}
                        </td>
                        <td>
                            {{book.date}}
                        </td>
                        <td>
                            <!-- 使用过滤器显示俩位小数 -->
                            {{book.price | showPrice}}
                        </td>
                        <td>
                            <!-- 当number小于1的时候,设置disabled属性为true,使得按钮失效,无法交互 -->
                            <button @click="decrement(index)" :disabled="book.number <= 1"> - </button>
                            {{book.number}}
                            <button @click="increment(index)"> + </button>
                        </td>
                        <td>
                            <button @click="delBook(index)">移除</button>
                        </td>
                    </tr>
                </tbody>
            </table>
            <h2>总价:{{count | showPrice}}</h2>
        </div>
        <h3 v-else>
            购物车为空!
        </h3>
    </div>
    <script src="../vue/vue.js"></script>
    <script src="./main.js"></script>
</body>

</html>